Apparatus for making bearings



Oct. 4, 1932. w. H. KLOCKEI 1,880,454

APPARATUS FOR MAKING BEARINGS Filed Feb, 25. 1929 5 Sheets-Sheet 1 ATTORNE 6.

Oct." 4, 1932. w. H. KLOCKE 1,380,454

APPARATUS FOR MAKING BEARINGS Filed Feb. 25, 1929 5 Sheets-Sheet 2 I NVEN TOR.

ATTORNEKS Oct. 4, 1932.

W. H. KLOCKE APPARATUS FOR MAKING "BEARINGS Fild Feb, 25. 1929 5 Sheets-Sheet s l 38 F in INVENTOR.

A TTORNEYS Patented Oct. 4, 1932 UNITED STATES PATENT OFFICE WILLIAM H.KLOCKE, OF WOODHAVEN, NEW YORK, ASSIGNOB TO THE CLEVELAND GRAPHITEBRONZE COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO APPARATUS FORMAKING BEARINGS Application filed February 25, 1928. Serial No. 842,511.

The present invention relates to the manufacture of bearings, and itsprimar ob ect is to provide an apparatus for use in t e bending andshaping of flat blanks of stock into annular shells.

In one embodiment, my invention conslsts of a mandrel or core andforming devices which are adapted to coact with such core in the shapingof blanks suitable for a subsequent circularizing operation; and inanother embodiment, such apparatus is so' modlfied that a completelyformed shell is pro-- duced by a single operation. In both of theseembodiments of m invention, the forming devices take the s ape ofcentrally pivoted jaws having means for positively engaging ablank andoperating surfaces of the approximate configurations of the mandrelsaround which such blanks are bent, and the articles which result in eachcase have end portions which converge towards each other; when the firstmentioned apparatus is being employed, such end portions are thus sodisposed that a single additional operation will suffice for completingthe shell, and when such second mentioned apparatus is being employed afinished shell results from the first operation. It will therefore beapparent that my invention greatly reduces the number of distinctprocesses which are necessary for the complete formation of bearingshells, and that as consequences of this such shells can be more rapidlyand cheaply manufactured.

To the accomplishment of the foregoing and related ends, said invention,then, consists of the means hereinafter fully described and particularlypointed out in the claims; the annexed drawings and the followingdescription setting forth in detail certain means of carrying out theinvention, such disclosed means illustrating, however, but one ofvarious ways in which the principle of the invention may be used.

In said annexed drawings Figs. 1 to 3, inclusive, are end elevationalviews which illustrate one embodiment of my invention and its manner ofoperation; and

That embodiment of my invention which I is shown inthe first threefigures consists in general of a head 10 and a mandrelll. The head 10comprises an upper part 12 which is slidably mounted between the Ways orguides 13, and a lower part 14 which is similarly mounted between theways 15. The mandrel 11 is associated with a support or pedestal 16 andits upper end and side faces define a forming surface 17. At its lowerend, the part 14 of the head 10 is provided with the ears or arearranged for providing the space 24 when the head 10 is in its elevatedposition. When such head descends, the cams 25 are adapted to engagewith the blank being formed. It is to be understood that flat portions23 and cams 25 in order to be effective must be on both formers. Inorder to provide for this it is necessary that the hinged connection ofthe formers must be in the nature of interfitting parts, similar to thedove-tailing at the corners of certain types of wooden boxes, butrelatively movable to provide for the hinge action. In this manner themajor portion of the strip of metal to be bent will be acted upon byboth formers.

The operation of the above described apparatus is substantially asfollows. When the head 10 is in its extreme upper position (Fig. 1), aflat blank 26 is positioned between the flats 23 and the top of themandrel 11. Such head is then moved downwardly by any suitable means(not shown). During this movement, the cams 25 rotate into their lockingpositions and the outer ends of the blank are bent downwardly andconformed to the mandrel 11 by the members 20. The pivots which connectthe links 19 with the lugs 18 and the formers 20 areso arranged that theforce exerted by the head 10 when in its lowermost position will have acomponent which tends to, move the lower of such pivots towards eachother. Therefore, all parts of the blank will be compelled to conform tothe surface 17 of the mandrel 11 and the finished article will have theshape shown in Fig. 3. When the head is again raised to its uppermostposition and the cams again assume their normal positions,'the blankwill retain its imparted form and is ready to be slid from the mandreland then circularized.

The modification shown in Fig. 4 difiers from the apparatus justdescribed in that the mandrel. 27 and the formers 28 are adapted tocompletel circularize a blank in a single operation. gtherwise, it isthe same in construction and operation as the embodiment illustrated inFigs. 1, 2 and 3. In the modification illustrated in Fig. 5, the pivot29 is not fixed as in the preceding figures, but instead is adapted topush u wardly against the yielding plunger 30. Such plunger isreciprocably mounted within the ore 31 of the head 32, and intermediateits enlargement 33 and the shoulder 34 is a compression spring 35. Itsupward motion is limited by the flange 36 and its downward motion islimited by the washer 37,, this latter being held in place by the nut38. The modification illustrated in Fig. 6 differs from the embodimentshown in Figs. 1 to 3, inclusive, in that the links 39 are pivoted attheir lower ends to the sup lementary formers 40 instead of being directy ivoted to the main formers 41. Such main ormers are fixedly ivoted asat 42 and their remote ends pivota y connect with the sup lementaryformers 40. The lower surface 0 the mandrel 43 is above the plane ofaction of the operating ends 44 of the formers 40. Therefore, when theformers 41 have assumed or are about to assume their lowermostpositions, any continued downward movement of the head 45 will result inforcing the ends 44 of the formers 40 inwardly and upwardly. This will"have the effect of additionally bending the stock being formed and willfurther insure against any undesired uncoiling when the formers areraised to their initial positions.

The articles produced by the apparatus shown in Figs. 1, 2 and 3, andthe articles which result from the operations described in connectionwith Figs. 5 and 6 may be finished in any desired manner, a preferablepractice consisting in placing such articles in the space defined bystationary and movable dies having semi-cylindrical forming surfaces andin then relatively approaching such surfaces in order to form circularshells of the desired diameter and with abutting edges which will remainin contact after this operation has been completed.

rds the means herein disclosed, provided t ose stated by any of thefollowing claims or their equivalent be employed.

I therefore particularly point out and distinctl claim as myinvention 1. n apparatus of the class described, a core, formers forcoactin with such core, a fixed pivotal connection tween such formers,and cam means associated with such connection, said means being adaptedto engage and hold a blank positioned between said connection and saidcore.

2. In apparatus of the class described, a core, formers for coactingwith such core, a pivotal connection between such formers, and flat andcam means associated with such connection, said flat means being adaptedto form a space between said connection and said core, and said cammeans bein adapted to engage a blank positioned in suc space.

3. In apparatus of the class described, a stationary core, pivotedforming means adapted for coacting with such core, yielding means forurging the adjacent ends of such formers towards said core, and positivemeans for moving the remote ends of such formers towards said core.

Signed by me, this 21st day of February,

WILLIAM H. KLOCKE.

Other modes of applying the principle of my invention may be employedinstead of the one explained, change being made as re-

